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    • 7. 发明授权
    • Electro-photographic image forming apparatus and method for determining a charging voltage
    • 电子照相图像形成装置和用于确定充电电压的方法
    • US07463840B2
    • 2008-12-09
    • US11443025
    • 2006-05-31
    • Jin-Cheol KimJoong-gwang ShiYoo-seok Yang
    • Jin-Cheol KimJoong-gwang ShiYoo-seok Yang
    • G03G15/02G03G15/00
    • G03G15/0266
    • Provided is an electro-photographic image forming apparatus and a method of determining a charging voltage thereof. The electro-photographic image forming apparatus includes: a charge roller for supplying a voltage of a predetermined level to a photoconductor; a transfer roller for transferring a developed image to a printing media by using a developer; a high voltage power supply for supplying a charging voltage at a preset level and a transfer voltage at a preset level to the charge roller and the transfer roller, respectively; and a controller for predicting a charged electric potential deviation based on the transfer voltage to be supplied by the high voltage power supply and for determining a charging voltage level to correct for the predicted charged electric potential deviation. Therefore, the deviation of the charged electric potential caused by the transfer voltage is prevented.
    • 提供一种电子照相图像形成装置及其充电电压的确定方法。 电子照相图像形成装置包括:充电辊,用于向感光体提供预定水平的电压; 用于通过使用显影剂将显影图像转印到打印介质的转印辊; 高压电源,用于分别向充电辊和转印辊提供预设电平的充电电压和预设电平的转印电压; 以及控制器,用于基于由高压电源提供的转印电压来预测充电电位偏差,并且确定充电电压电平以校正预测的充电电位偏差。 因此,防止由转印电压引起的充电电位的偏差。